Convert Miles (mi) to Millimetres (mm) | mi in mm

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# Let's convert Miles (mi) to Millimetres (mm)

This quick and easy calculator will convert Miles (mi) to Millimetres (mm) and show formula, brief history on the units and quick maths for the conversion.

## Quick Reference for Converting Miles to Millimetres

Formula
mm = mi x 1609344
Quick Rough Maths
To get the Millimetres, multiply the number of Miles by 1.6 million
Miles (mi) in 1 Millimetre
There are 0 Miles in 1 Millimetre
Millimetres (mm) in 1 Mile
There are 1609344 Millimetres in 1 Mile

## Unit Information

Mile
/mʌɪl/
Symbol: mi
Unit System: Imperial

### What is the Mile?

The mile is a unit of length in the imperial unit system with the symbol mi.

It was originally an English unit but was adopted by many countries who all had their own slight variation on definition. The English mile, however, is equal to 63,360 inches, 5280 ft or 1760 yards.

The UK still uses the mile on all roadway signs rather than the kilometre; its SI "equivalent". It used to have the symbol 'm' until SI was established and it was changed to avoid confusion with the unit metre.

Millimetre
/ˈmɪlɪmiːtə/
Symbol: mm
Unit System: SI

### What is the Millimetre?

The millimetre (American spelling millimeter) is a unit of length and is a multiple of the SI unit metre. It uses the symbol mm.

There are 1000 mm in 1 m and 10 mm in 1 cm. From this one can derive that there are 0.03937 in.

The millimetre is sometimes verbally abbreviated to 'mil' - which can cause confusion in the US as there is a unit there that means thousandth of an inch.